Si-modified aluminide coating deposited on TiAlNb alloy by slurry method

• Autorzy: Goral M. , Moskal G. , Swadzba L. , Tetsui T.
• Języki publikacji: EN

Abstrakty

EN

Purpose: Increasing oxidation resistance of TiAl intermetallic alloy by depositing aluminide coating by slurry method and investigation of the influence of Si addition on structure of obtained coatings. Design/methodology/approach: The structure of coatings was investigated by light scanning microscopy. The chemical composition of coatings was investigated by EDS method and XRD phase analysis was used as well. Findings: The investigation has showed that the thickness of the coatings was 40 micrometres. The structure of the silicon-modified aluminide coatings is as follows: - the outer zone consisting of TiAl3 phase and titanium silicides, - the middle zone consisting of columnar titanium silicides in phase TiAl3 matrix, - the inner zone consisting of TiAl2 phase. The analysis of the average chemical composition of the outer zone exhibited the gradual increase of the silicon content along with increase of this element in the slurry. Practical implications: The slurry method can be applied in aerospace and automotive industry as low-cost technology of producing of aluminide coatings on intermetallics. Originality/value: New method of depositing of Si modified aluminide coatings on TiAl alloys.

Słowa kluczowe

EN

surface treatment; aluminide coatings; oxidation resistance; low-cost technology

PL

obróbka powierzchniowa; powłoki aluminidkowe; pokrycia aluminidkowe; odporność na utlenianie; technologia oszczędnościowa

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2007
• Tom: Vol. 21, nr 1
• Strony: 75--78
• Opis fizyczny: Bibliogr. 16 poz., fot., rys., tab.

Twórcy

autor

Goral M.

autor

Moskal G.

autor

Swadzba L.

autor

Tetsui T.

• Department of Materials Science, Silesian University of Technology, ul. Krasinskiego 8, 40-019 Katowice, Poland,

Bibliografia

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